Molding-machine.



K. FRITZ.

MOLDING MACHINE.

APPLICATION IILIID JULY 20, 1910.

'- Patented Apr. 16, 1912':

2 SHEETS-SHEET 1. H

COLUMBIA PLANOORAPH c0 WASH| NOTON n c Att o rneysQ I .bg v

K. FRITZ.

I MOLDING MACHINE. APPLIOATION FILED JULY 20, 1910. I

' 1,023,261 Patent d A r. 16, 1912.

. I J Wu 7 25 "P J 27 I Witnesses Inventor;

Atto rn eys KARL FRITZ OF W'Y OMISSING, PENNSYLVANIA.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed July 20, 1910. Serial No. 572,909.

To all whom it may concern:

Be it known that I, KARL FRITZ, a citizen of the United States, residing at VVyomissing, in the county of Berks and State of Pennsylvania, have invented a new and useful Molding-Machine, of which the following is a specification.

This invention relates to molding machines in which the mold table and the parts carried thereby is moved against a press head for ramming or compressing the sand;

and it is the object of the invention to-pro-- vide a machine of this kind which issimply constructed and easily operated, a single movement of one operating lever carrying the flask and other parts supported on the table against the press head, and a single movement of another lever lifting the flask from the pattern plate.

In order that the invention may be better understood, reference is had to the accompanying drawings forming a part of this specification, in which drawings- Figure 1 is a front elevation of the machine. Fig. 2 is a side elevation partly in section on the line 22 of Fig. 1. Fig. 3 is a plan view. Fig. 4 is a horizontal section on the line 44 of Fig. 2.

Referring specifically to the drawings, the supporting frame of the machine comprises spaced upright members 5 which are connected at the top by a cross piece 6, and near the bottom by a cross piece 7. In the parts 6 and 7 are alined openings in which are guided vertically sliding stems 8 enlarged at their upper ends as indicated at 9, and carrying the mold table 10, the latter being secured to the enlarged upper end of the stems by bolts or other suitable fastening means 11.

In the frame member 5, near the bottom thereof, is journaled a rock shaft 12 having a projecting arm 13, the extremity of which is bifurcated, and to which is connected one end of a rod 14, the other end of which rod is connected to the bottom of the table 10, the latter being formed with cars 15 between which the end of the rod extends. A pin 16 passing through the ears and the rod, connects the latter to the table. By this connection between the shaft 12 and the table 10, the latter is elevated or lowered when the former is rocked. The rock shaft is operated by means of a hand lever 17 connected to one end thereof, and carrying at its outer end a counter-weight 18.

On the sides of the frame members 5 are bosses 19 to which are pivoted, as indicated at 20, stems 21 carrying a press head 22, which is adapted to be positioned above the table 10 and the parts carried thereby, for a purpose to be. presently described. The press head may be swung sidewise from its position above the table as shown by dotted lines in Fig. 2. On the frame members 5 are stops 23 for limiting this side- ,wise swing of the press head, said stops being-in-the path of the stems 21.

On top of the table 10 is mounted a pattern plate 24, and on the latter is mounted the flask 25. The pattern plate carriesupstanding dowel pins 26 which extend through openings in flanges 27 projecting from the ends of the flask, whereby the latter is properly centered, and firmly held in place on the pattern plate. The flask 25 is adapted to be lifted off the pattern plate, the following means being provided for this purpose: To the cross piece 7 is fixed a guide 28 in which is mounted for. vertically sliding movement a bar 29 having secured to its lower end the center of a substantially H- shaped spider provided with four horizontally extending arms 30. These arms carry at their outer ends vertically extending stems 31, said stems being arranged so that their upper ends may engage the bottom of the flask 25. The pattern plate 24 is recessed at its corners so that the stems may engage the flask as stated. The slide bar 29 is operated by means of a hand lever 32, on a shaft 33 having a crank 34 which is connected by means of a link 35 to the slide bar. Upon swinging the hand lever 32, the shaft 33 is rocked, and through the link 35 operates the slide bar. To one side of the cross piece 6 is secured a housing 36 having a tubular extension 37 in which the shaft 33 is journaled. The crank 34 is inclosed by the housing 36.

In the operation of the machine, the hand lever 17 is swung to one side to rock the shaft 12 in a direction to elevate the flask 25 against the press head 22, for the purpose of ramming or compressing the sand. After this has been done, the hand lever 32 is operated to lift the flask oil the pattern plate, which is effected by the stems 31, as already described.

It will be evident from the foregoing that the machine is rapid in operation, and also 'simple, in view of which it may be operated by unskilled labor. The flask is lifted perfectly evenly, thestems 31 being arranged so as to engage the same adjacent to its corners, in View of which all danger of disturbing the mold is eliminated.

,What is claimed is: n

In a molding machine, the combination with a frame including spaced upright members and upper and lower cross pieces connecting said members, a press head, and connections between the frame and head for permitting the latter to be swung aside; of stems guided in said cross pieces, a table car-; ried by said stems, a pattern plateupon the table and having-its corners recessed, dowel pins rising from said plate, a flask fitting over said plate and having openings engaging said pins, a vertically movable bar, a

rising from the four arms of said spider through the recesses in the pattern plate and engaging said flask, and independent mechanisms for lifting said first-named stems to raise the table and for lifting said vertically movable bar to raise the flask off the pattern plate. a

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses; KARL FRITZ.

Witnesses:

THEO. L. EBERLY, J. WALLACE MILLER.

Copies of this patent may be obtained; foxfive cents each, by addressing the Commissioner of Patents, v

Washington, D'. G! 

